Note: The Product use link: https://www.youtube.com/watch?v=8gymyNp6uSk Warm Tips: This product do not need a charger cable, by USB interface charge. Please pay attention to the direction of the interface, make sure to insert it correctly. If you can not charge, please try to insert another direction, thank you! Feature: 1. One key Physical examination: track heart rate, Blood Pressure,Blood Oxygen and mood 2.Fitness Tracker: Record the motion trace, distance, speed, duration, expend for running 3.Heart Rate Monitor, sleep monitor, Fitness Tracker 4.Remote Contral camera: Shake Photograph 5.Smart Finder: Find the Bracelet 6.Automatically Light the screen: Rasied hand to bring screen 7.Intellignet remind: Calls remind, SMS notification, Pod o'clock,Sedentary remind, Facebook/Twitter/Whatsapp Remind 8.Analysis Weekly Data,Provide healthy tips 9.Data Record for Day / Week / Month 10.what shows on the smartband: Time and Date, Battery Power / Steps / Distance / Brun Kcrl / Heart Rate / Spo2 / Blood Pressure / Sleep time / Timer 11.Confortable Material For Skin 12.Support IOS and Android Smart Phone Specification: Waterproof: IP67 Waterproof Display:0.86" OLED Screen with touch key Bluetooth:4.0BLE Battery:85mAh Polymer Battery OS:Compatable with Android 4.4 or above / iOS 8.0 and above Length * Weight: 19.8 * 67mm Package content: 1 x M2 Smart Band (Charge by a USB port, not need charger cable 1 x User Manual